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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/dev/ata/chipsets/ata-marvell.c |
/*-
* Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/ata/chipsets/ata-marvell.c 233717 2012-03-30 23:56:16Z marius $");
#include "opt_ata.h"
#include <sys/param.h>
#include <sys/module.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/ata.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/sema.h>
#include <sys/taskqueue.h>
#include <vm/uma.h>
#include <machine/stdarg.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/ata/ata-all.h>
#include <dev/ata/ata-pci.h>
#include <ata_if.h>
/* local prototypes */
static int ata_marvell_chipinit(device_t dev);
static int ata_marvell_ch_attach(device_t dev);
static int ata_marvell_setmode(device_t dev, int target, int mode);
static int ata_marvell_dummy_chipinit(device_t dev);
static int ata_marvell_edma_ch_attach(device_t dev);
static int ata_marvell_edma_ch_detach(device_t dev);
static int ata_marvell_edma_status(device_t dev);
static int ata_marvell_edma_begin_transaction(struct ata_request *request);
static int ata_marvell_edma_end_transaction(struct ata_request *request);
static void ata_marvell_edma_reset(device_t dev);
static void ata_marvell_edma_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error);
static void ata_marvell_edma_dmainit(device_t dev);
/* misc defines */
#define MV_50XX 50
#define MV_60XX 60
#define MV_6042 62
#define MV_7042 72
#define MV_61XX 61
#define MV_91XX 91
/*
* Marvell chipset support functions
*/
#define ATA_MV_HOST_BASE(ch) \
((ch->unit & 3) * 0x0100) + (ch->unit > 3 ? 0x30000 : 0x20000)
#define ATA_MV_EDMA_BASE(ch) \
((ch->unit & 3) * 0x2000) + (ch->unit > 3 ? 0x30000 : 0x20000)
struct ata_marvell_response {
u_int16_t tag;
u_int8_t edma_status;
u_int8_t dev_status;
u_int32_t timestamp;
};
struct ata_marvell_dma_prdentry {
u_int32_t addrlo;
u_int32_t count;
u_int32_t addrhi;
u_int32_t reserved;
};
static int
ata_marvell_probe(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(dev);
static const struct ata_chip_id const ids[] =
{{ ATA_M88SX5040, 0, 4, MV_50XX, ATA_SA150, "88SX5040" },
{ ATA_M88SX5041, 0, 4, MV_50XX, ATA_SA150, "88SX5041" },
{ ATA_M88SX5080, 0, 8, MV_50XX, ATA_SA150, "88SX5080" },
{ ATA_M88SX5081, 0, 8, MV_50XX, ATA_SA150, "88SX5081" },
{ ATA_M88SX6041, 0, 4, MV_60XX, ATA_SA300, "88SX6041" },
{ ATA_M88SX6042, 0, 4, MV_6042, ATA_SA300, "88SX6042" },
{ ATA_M88SX6081, 0, 8, MV_60XX, ATA_SA300, "88SX6081" },
{ ATA_M88SX7042, 0, 4, MV_7042, ATA_SA300, "88SX7042" },
{ ATA_M88SE6101, 0, 0, MV_61XX, ATA_UDMA6, "88SE6101" },
{ ATA_M88SE6102, 0, 0, MV_61XX, ATA_UDMA6, "88SE6102" },
{ ATA_M88SE6111, 0, 1, MV_61XX, ATA_UDMA6, "88SE6111" },
{ ATA_M88SE6121, 0, 2, MV_61XX, ATA_UDMA6, "88SE6121" },
{ ATA_M88SE6141, 0, 4, MV_61XX, ATA_UDMA6, "88SE6141" },
{ ATA_M88SE6145, 0, 4, MV_61XX, ATA_UDMA6, "88SE6145" },
{ 0x91a41b4b, 0, 0, MV_91XX, ATA_UDMA6, "88SE912x" },
{ 0, 0, 0, 0, 0, 0}};
if (pci_get_vendor(dev) != ATA_MARVELL_ID &&
pci_get_vendor(dev) != ATA_MARVELL2_ID)
return ENXIO;
if (!(ctlr->chip = ata_match_chip(dev, ids)))
return ENXIO;
ata_set_desc(dev);
switch (ctlr->chip->cfg2) {
case MV_50XX:
case MV_60XX:
case MV_6042:
case MV_7042:
ctlr->chipinit = ata_marvell_edma_chipinit;
break;
case MV_61XX:
ctlr->chipinit = ata_marvell_chipinit;
break;
case MV_91XX:
ctlr->chipinit = ata_marvell_dummy_chipinit;
break;
}
return (BUS_PROBE_DEFAULT);
}
static int
ata_marvell_chipinit(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(dev);
device_t child;
if (ata_setup_interrupt(dev, ata_generic_intr))
return ENXIO;
/* Create AHCI subdevice if AHCI part present. */
if (ctlr->chip->cfg1) {
child = device_add_child(dev, NULL, -1);
if (child != NULL) {
device_set_ivars(child, (void *)(intptr_t)-1);
bus_generic_attach(dev);
}
}
ctlr->ch_attach = ata_marvell_ch_attach;
ctlr->ch_detach = ata_pci_ch_detach;
ctlr->reset = ata_generic_reset;
ctlr->setmode = ata_marvell_setmode;
ctlr->channels = 1;
return (0);
}
static int
ata_marvell_ch_attach(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
int error;
error = ata_pci_ch_attach(dev);
/* dont use 32 bit PIO transfers */
ch->flags |= ATA_USE_16BIT;
ch->flags |= ATA_CHECKS_CABLE;
return (error);
}
static int
ata_marvell_setmode(device_t dev, int target, int mode)
{
struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
struct ata_channel *ch = device_get_softc(dev);
mode = min(mode, ctlr->chip->max_dma);
/* Check for 80pin cable present. */
if (ata_dma_check_80pin && mode > ATA_UDMA2 &&
ATA_IDX_INB(ch, ATA_BMDEVSPEC_0) & 0x01) {
ata_print_cable(dev, "controller");
mode = ATA_UDMA2;
}
/* Nothing to do to setup mode, the controller snoop SET_FEATURE cmd. */
return (mode);
}
static int
ata_marvell_dummy_chipinit(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(dev);
ctlr->channels = 0;
return (0);
}
int
ata_marvell_edma_chipinit(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(dev);
if (ata_setup_interrupt(dev, ata_generic_intr))
return ENXIO;
ctlr->r_type1 = SYS_RES_MEMORY;
ctlr->r_rid1 = PCIR_BAR(0);
if (!(ctlr->r_res1 = bus_alloc_resource_any(dev, ctlr->r_type1,
&ctlr->r_rid1, RF_ACTIVE)))
return ENXIO;
/* mask all host controller interrupts */
ATA_OUTL(ctlr->r_res1, 0x01d64, 0x00000000);
/* mask all PCI interrupts */
ATA_OUTL(ctlr->r_res1, 0x01d5c, 0x00000000);
ctlr->ch_attach = ata_marvell_edma_ch_attach;
ctlr->ch_detach = ata_marvell_edma_ch_detach;
ctlr->reset = ata_marvell_edma_reset;
ctlr->setmode = ata_sata_setmode;
ctlr->getrev = ata_sata_getrev;
ctlr->channels = ctlr->chip->cfg1;
/* clear host controller interrupts */
ATA_OUTL(ctlr->r_res1, 0x20014, 0x00000000);
if (ctlr->chip->cfg1 > 4)
ATA_OUTL(ctlr->r_res1, 0x30014, 0x00000000);
/* clear PCI interrupts */
ATA_OUTL(ctlr->r_res1, 0x01d58, 0x00000000);
/* unmask PCI interrupts we want */
ATA_OUTL(ctlr->r_res1, 0x01d5c, 0x007fffff);
/* unmask host controller interrupts we want */
ATA_OUTL(ctlr->r_res1, 0x01d64, 0x000000ff/*HC0*/ | 0x0001fe00/*HC1*/ |
/*(1<<19) | (1<<20) | (1<<21) |*/(1<<22) | (1<<24) | (0x7f << 25));
return 0;
}
static int
ata_marvell_edma_ch_attach(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
struct ata_channel *ch = device_get_softc(dev);
u_int64_t work;
int i;
ata_marvell_edma_dmainit(dev);
work = ch->dma.work_bus;
/* clear work area */
bzero(ch->dma.work, 1024+256);
bus_dmamap_sync(ch->dma.work_tag, ch->dma.work_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
/* set legacy ATA resources */
for (i = ATA_DATA; i <= ATA_COMMAND; i++) {
ch->r_io[i].res = ctlr->r_res1;
ch->r_io[i].offset = 0x02100 + (i << 2) + ATA_MV_EDMA_BASE(ch);
}
ch->r_io[ATA_CONTROL].res = ctlr->r_res1;
ch->r_io[ATA_CONTROL].offset = 0x02120 + ATA_MV_EDMA_BASE(ch);
ch->r_io[ATA_IDX_ADDR].res = ctlr->r_res1;
ata_default_registers(dev);
/* set SATA resources */
switch (ctlr->chip->cfg2) {
case MV_50XX:
ch->r_io[ATA_SSTATUS].res = ctlr->r_res1;
ch->r_io[ATA_SSTATUS].offset = 0x00100 + ATA_MV_HOST_BASE(ch);
ch->r_io[ATA_SERROR].res = ctlr->r_res1;
ch->r_io[ATA_SERROR].offset = 0x00104 + ATA_MV_HOST_BASE(ch);
ch->r_io[ATA_SCONTROL].res = ctlr->r_res1;
ch->r_io[ATA_SCONTROL].offset = 0x00108 + ATA_MV_HOST_BASE(ch);
break;
case MV_60XX:
case MV_6042:
case MV_7042:
ch->r_io[ATA_SSTATUS].res = ctlr->r_res1;
ch->r_io[ATA_SSTATUS].offset = 0x02300 + ATA_MV_EDMA_BASE(ch);
ch->r_io[ATA_SERROR].res = ctlr->r_res1;
ch->r_io[ATA_SERROR].offset = 0x02304 + ATA_MV_EDMA_BASE(ch);
ch->r_io[ATA_SCONTROL].res = ctlr->r_res1;
ch->r_io[ATA_SCONTROL].offset = 0x02308 + ATA_MV_EDMA_BASE(ch);
ch->r_io[ATA_SACTIVE].res = ctlr->r_res1;
ch->r_io[ATA_SACTIVE].offset = 0x02350 + ATA_MV_EDMA_BASE(ch);
break;
}
ch->flags |= ATA_NO_SLAVE;
ch->flags |= ATA_USE_16BIT; /* XXX SOS needed ? */
ch->flags |= ATA_SATA;
ata_generic_hw(dev);
ch->hw.begin_transaction = ata_marvell_edma_begin_transaction;
ch->hw.end_transaction = ata_marvell_edma_end_transaction;
ch->hw.status = ata_marvell_edma_status;
/* disable the EDMA machinery */
ATA_OUTL(ctlr->r_res1, 0x02028 + ATA_MV_EDMA_BASE(ch), 0x00000002);
DELAY(100000); /* SOS should poll for disabled */
/* set configuration to non-queued 128b read transfers stop on error */
ATA_OUTL(ctlr->r_res1, 0x02000 + ATA_MV_EDMA_BASE(ch), (1<<11) | (1<<13));
/* request queue base high */
ATA_OUTL(ctlr->r_res1, 0x02010 + ATA_MV_EDMA_BASE(ch), work >> 32);
/* request queue in ptr */
ATA_OUTL(ctlr->r_res1, 0x02014 + ATA_MV_EDMA_BASE(ch), work & 0xffffffff);
/* request queue out ptr */
ATA_OUTL(ctlr->r_res1, 0x02018 + ATA_MV_EDMA_BASE(ch), 0x0);
/* response queue base high */
work += 1024;
ATA_OUTL(ctlr->r_res1, 0x0201c + ATA_MV_EDMA_BASE(ch), work >> 32);
/* response queue in ptr */
ATA_OUTL(ctlr->r_res1, 0x02020 + ATA_MV_EDMA_BASE(ch), 0x0);
/* response queue out ptr */
ATA_OUTL(ctlr->r_res1, 0x02024 + ATA_MV_EDMA_BASE(ch), work & 0xffffffff);
/* clear SATA error register */
ATA_IDX_OUTL(ch, ATA_SERROR, ATA_IDX_INL(ch, ATA_SERROR));
/* clear any outstanding error interrupts */
ATA_OUTL(ctlr->r_res1, 0x02008 + ATA_MV_EDMA_BASE(ch), 0x0);
/* unmask all error interrupts */
ATA_OUTL(ctlr->r_res1, 0x0200c + ATA_MV_EDMA_BASE(ch), ~0x0);
/* enable EDMA machinery */
ATA_OUTL(ctlr->r_res1, 0x02028 + ATA_MV_EDMA_BASE(ch), 0x00000001);
return 0;
}
static int
ata_marvell_edma_ch_detach(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
if (ch->dma.work_tag && ch->dma.work_map)
bus_dmamap_sync(ch->dma.work_tag, ch->dma.work_map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
ata_dmafini(dev);
return (0);
}
static int
ata_marvell_edma_status(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
struct ata_channel *ch = device_get_softc(dev);
u_int32_t cause = ATA_INL(ctlr->r_res1, 0x01d60);
int shift = (ch->unit << 1) + (ch->unit > 3);
if (cause & (1 << shift)) {
/* clear interrupt(s) */
ATA_OUTL(ctlr->r_res1, 0x02008 + ATA_MV_EDMA_BASE(ch), 0x0);
/* do we have any PHY events ? */
ata_sata_phy_check_events(dev, -1);
}
/* do we have any device action ? */
return (cause & (2 << shift));
}
/* must be called with ATA channel locked and state_mtx held */
static int
ata_marvell_edma_begin_transaction(struct ata_request *request)
{
struct ata_pci_controller *ctlr=device_get_softc(device_get_parent(request->parent));
struct ata_channel *ch = device_get_softc(request->parent);
u_int32_t req_in;
u_int8_t *bytep;
int i;
int error, slot;
/* only DMA R/W goes through the EMDA machine */
if (request->u.ata.command != ATA_READ_DMA &&
request->u.ata.command != ATA_WRITE_DMA &&
request->u.ata.command != ATA_READ_DMA48 &&
request->u.ata.command != ATA_WRITE_DMA48) {
/* disable the EDMA machinery */
if (ATA_INL(ctlr->r_res1, 0x02028 + ATA_MV_EDMA_BASE(ch)) & 0x00000001)
ATA_OUTL(ctlr->r_res1, 0x02028 + ATA_MV_EDMA_BASE(ch), 0x00000002);
return ata_begin_transaction(request);
}
/* check sanity, setup SG list and DMA engine */
if ((error = ch->dma.load(request, NULL, NULL))) {
device_printf(request->parent, "setting up DMA failed\n");
request->result = error;
return ATA_OP_FINISHED;
}
/* get next free request queue slot */
req_in = ATA_INL(ctlr->r_res1, 0x02014 + ATA_MV_EDMA_BASE(ch));
slot = (((req_in & ~0xfffffc00) >> 5) + 0) & 0x1f;
bytep = (u_int8_t *)(ch->dma.work);
bytep += (slot << 5);
/* fill in this request */
le32enc(bytep + 0 * sizeof(u_int32_t),
request->dma->sg_bus & 0xffffffff);
le32enc(bytep + 1 * sizeof(u_int32_t),
(u_int64_t)request->dma->sg_bus >> 32);
if (ctlr->chip->cfg2 != MV_6042 && ctlr->chip->cfg2 != MV_7042) {
le16enc(bytep + 4 * sizeof(u_int16_t),
(request->flags & ATA_R_READ ? 0x01 : 0x00) | (request->tag << 1));
i = 10;
bytep[i++] = (request->u.ata.count >> 8) & 0xff;
bytep[i++] = 0x10 | ATA_COUNT;
bytep[i++] = request->u.ata.count & 0xff;
bytep[i++] = 0x10 | ATA_COUNT;
bytep[i++] = (request->u.ata.lba >> 24) & 0xff;
bytep[i++] = 0x10 | ATA_SECTOR;
bytep[i++] = request->u.ata.lba & 0xff;
bytep[i++] = 0x10 | ATA_SECTOR;
bytep[i++] = (request->u.ata.lba >> 32) & 0xff;
bytep[i++] = 0x10 | ATA_CYL_LSB;
bytep[i++] = (request->u.ata.lba >> 8) & 0xff;
bytep[i++] = 0x10 | ATA_CYL_LSB;
bytep[i++] = (request->u.ata.lba >> 40) & 0xff;
bytep[i++] = 0x10 | ATA_CYL_MSB;
bytep[i++] = (request->u.ata.lba >> 16) & 0xff;
bytep[i++] = 0x10 | ATA_CYL_MSB;
bytep[i++] = ATA_D_LBA | ATA_D_IBM | ((request->u.ata.lba >> 24) & 0xf);
bytep[i++] = 0x10 | ATA_DRIVE;
bytep[i++] = request->u.ata.command;
bytep[i++] = 0x90 | ATA_COMMAND;
} else {
le32enc(bytep + 2 * sizeof(u_int32_t),
(request->flags & ATA_R_READ ? 0x01 : 0x00) | (request->tag << 1));
i = 16;
bytep[i++] = 0;
bytep[i++] = 0;
bytep[i++] = request->u.ata.command;
bytep[i++] = request->u.ata.feature & 0xff;
bytep[i++] = request->u.ata.lba & 0xff;
bytep[i++] = (request->u.ata.lba >> 8) & 0xff;
bytep[i++] = (request->u.ata.lba >> 16) & 0xff;
bytep[i++] = ATA_D_LBA | ATA_D_IBM | ((request->u.ata.lba >> 24) & 0x0f);
bytep[i++] = (request->u.ata.lba >> 24) & 0xff;
bytep[i++] = (request->u.ata.lba >> 32) & 0xff;
bytep[i++] = (request->u.ata.lba >> 40) & 0xff;
bytep[i++] = (request->u.ata.feature >> 8) & 0xff;
bytep[i++] = request->u.ata.count & 0xff;
bytep[i++] = (request->u.ata.count >> 8) & 0xff;
bytep[i++] = 0;
bytep[i++] = 0;
}
bus_dmamap_sync(ch->dma.work_tag, ch->dma.work_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
/* enable EDMA machinery if needed */
if (!(ATA_INL(ctlr->r_res1, 0x02028 + ATA_MV_EDMA_BASE(ch)) & 0x00000001)) {
ATA_OUTL(ctlr->r_res1, 0x02028 + ATA_MV_EDMA_BASE(ch), 0x00000001);
while (!(ATA_INL(ctlr->r_res1,
0x02028 + ATA_MV_EDMA_BASE(ch)) & 0x00000001))
DELAY(10);
}
/* tell EDMA it has a new request */
slot = (((req_in & ~0xfffffc00) >> 5) + 1) & 0x1f;
req_in &= 0xfffffc00;
req_in += (slot << 5);
ATA_OUTL(ctlr->r_res1, 0x02014 + ATA_MV_EDMA_BASE(ch), req_in);
return ATA_OP_CONTINUES;
}
/* must be called with ATA channel locked and state_mtx held */
static int
ata_marvell_edma_end_transaction(struct ata_request *request)
{
struct ata_pci_controller *ctlr=device_get_softc(device_get_parent(request->parent));
struct ata_channel *ch = device_get_softc(request->parent);
int offset = (ch->unit > 3 ? 0x30014 : 0x20014);
u_int32_t icr = ATA_INL(ctlr->r_res1, offset);
int res;
/* EDMA interrupt */
if ((icr & (0x0001 << (ch->unit & 3)))) {
struct ata_marvell_response *response;
u_int32_t rsp_in, rsp_out;
int slot;
/* stop timeout */
callout_stop(&request->callout);
/* get response ptr's */
rsp_in = ATA_INL(ctlr->r_res1, 0x02020 + ATA_MV_EDMA_BASE(ch));
rsp_out = ATA_INL(ctlr->r_res1, 0x02024 + ATA_MV_EDMA_BASE(ch));
slot = (((rsp_in & ~0xffffff00) >> 3)) & 0x1f;
rsp_out &= 0xffffff00;
rsp_out += (slot << 3);
bus_dmamap_sync(ch->dma.work_tag, ch->dma.work_map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
response = (struct ata_marvell_response *)
(ch->dma.work + 1024 + (slot << 3));
/* record status for this request */
request->status = response->dev_status;
request->error = 0;
/* ack response */
ATA_OUTL(ctlr->r_res1, 0x02024 + ATA_MV_EDMA_BASE(ch), rsp_out);
/* update progress */
if (!(request->status & ATA_S_ERROR) &&
!(request->flags & ATA_R_TIMEOUT))
request->donecount = request->bytecount;
/* unload SG list */
ch->dma.unload(request);
res = ATA_OP_FINISHED;
}
/* legacy ATA interrupt */
else {
res = ata_end_transaction(request);
}
/* ack interrupt */
ATA_OUTL(ctlr->r_res1, offset, ~(icr & (0x0101 << (ch->unit & 3))));
return res;
}
static void
ata_marvell_edma_reset(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
struct ata_channel *ch = device_get_softc(dev);
/* disable the EDMA machinery */
ATA_OUTL(ctlr->r_res1, 0x02028 + ATA_MV_EDMA_BASE(ch), 0x00000002);
while ((ATA_INL(ctlr->r_res1, 0x02028 + ATA_MV_EDMA_BASE(ch)) & 0x00000001))
DELAY(10);
/* clear SATA error register */
ATA_IDX_OUTL(ch, ATA_SERROR, ATA_IDX_INL(ch, ATA_SERROR));
/* clear any outstanding error interrupts */
ATA_OUTL(ctlr->r_res1, 0x02008 + ATA_MV_EDMA_BASE(ch), 0x0);
/* unmask all error interrupts */
ATA_OUTL(ctlr->r_res1, 0x0200c + ATA_MV_EDMA_BASE(ch), ~0x0);
/* enable channel and test for devices */
if (ata_sata_phy_reset(dev, -1, 1))
ata_generic_reset(dev);
else
ch->devices = 0;
/* enable EDMA machinery */
ATA_OUTL(ctlr->r_res1, 0x02028 + ATA_MV_EDMA_BASE(ch), 0x00000001);
}
static void
ata_marvell_edma_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs,
int error)
{
struct ata_dmasetprd_args *args = xsc;
struct ata_marvell_dma_prdentry *prd = args->dmatab;
int i;
if ((args->error = error))
return;
for (i = 0; i < nsegs; i++) {
prd[i].addrlo = htole32(segs[i].ds_addr);
prd[i].count = htole32(segs[i].ds_len);
prd[i].addrhi = htole32((u_int64_t)segs[i].ds_addr >> 32);
prd[i].reserved = 0;
}
prd[i - 1].count |= htole32(ATA_DMA_EOT);
KASSERT(nsegs <= ATA_DMA_ENTRIES, ("too many DMA segment entries\n"));
args->nsegs = nsegs;
}
static void
ata_marvell_edma_dmainit(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
struct ata_channel *ch = device_get_softc(dev);
/* note start and stop are not used here */
ch->dma.setprd = ata_marvell_edma_dmasetprd;
/* if 64bit support present adjust max address used */
if (ATA_INL(ctlr->r_res1, 0x00d00) & 0x00000004)
ch->dma.max_address = BUS_SPACE_MAXADDR;
/* chip does not reliably do 64K DMA transfers */
if (ctlr->chip->cfg2 == MV_50XX || ctlr->chip->cfg2 == MV_60XX)
ch->dma.max_iosize = 64 * DEV_BSIZE;
ata_dmainit(dev);
}
ATA_DECLARE_DRIVER(ata_marvell);